if(document.images) 

{
     	homeoff = new Image();
		homeoff.src = "images/homeoff.gif";
		homeover = new Image();
		homeover.src = "images/homeover.gif";
		
		startoff = new Image();
		startoff.src = "images/startoff.gif";
		startover = new Image();
	    startover.src = "images/startover.gif";
		
		breakoff = new Image();
		breakoff.src = "images/breakoff.gif";
		breakover = new Image();
	    breakover.src = "images/breakover.gif";
		
		mcoff = new Image();
		mcoff.src = "images/mcoff.gif";
		mcover = new Image();
		mcover.src = "images/mcover.gif";
		
		desoff = new Image();
		desoff.src = "images/desoff.gif";
		desover = new Image();
		desover.src = "images/desover.gif";
				
		alcoff = new Image();
		alcoff.src = "images/alcoff.gif";
		alcover = new Image();
		alcover.src = "images/alcover.gif";
		
		winoff = new Image();
		winoff.src = "images/winoff.gif";
      	winover = new Image();
		winover.src = "images/winover.gif";
		
		sdoff = new Image();
		sdoff.src = "images/sdoff.gif";
		sdover = new Image();
		sdover.src = "images/sdover.gif";
		
		catoff = new Image();
		catoff.src = "images/catoff.gif";
		catover = new Image();
		catover.src = "images/catover.gif";
		
		photoff = new Image();
		photoff.src = "images/photoff.gif";
		photover = new Image();
		photover.src = "images/photover.gif";
		
		eveoff = new Image();
		eveoff.src = "images/eveoff.gif";
		eveover = new Image();
		eveover.src = "images/eveover.gif";
		
     	conoff = new Image();
		conoff.src = "images/conoff.gif";
		conover = new Image();
		conover.src = "images/conover.gif";
                          
                                          
}

function onoff(imgName,state) {
        if(document.images) 
		{               
		document.images[imgName].src = eval(imgName+state+".src");
        }
}